ChannelMag CM2 SeriesMagnetic Flow Meters

Features

• Solid state sensors; no moving parts

• Patented AC coil excitation (high coil current and high pulsation frequency)

• Often installed under flow conditions; no bypass pumping necessary

• Suitable for existing channels up to 200 feet (60m) wide

• Sensor reference coils

• Internal grounding electrodes

• Calibrated accuracy with NIST traceability

• Various flow tube materials, including carbon steel for powerful magnetic field retention

• Accuracy unaffected by media coatings such as calcium carbonate, raw sewage, grease, algae and similar

• High signal-to-noise ratio for immunity to media noise

EMCO's ChannelMag CM2 Magnetic Flow Meter System consists of the patented ChannelMag Flow Sensor and 4411e Transmitter. ChannelMag flow meters are suitable for raw sewage and storm water in new or existing channels.

The ChannelMag CM2.

The ChannelMag is a bi-directional magnetic flow meter system for open

channels from 6 inches to 200 feet (150mm to 60m). ChannelMag sensors

may be used singuarly or in multiples, dependant on the width of the channel

and the required accuracy.

A high resolution ultrasonic or hydrostatic transducer determined the level

measurement, with compensation for change in air density.

A remote 4411e bi-directional transmitter calculates volumetric flow from the

mean velocity and level sensor inputs. It displays rate and totals, and is pro-

grammable to show new forward totals from storm water back up. Transmis-

sion signals include two 4-20 mA outputs form separate terminals, a scaleable

pulse frequency output, and RS232 communication as standard supply.

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Application Guide

Maximum Media Temperature 140ºF (60ºC)

Maximum Level 33 feet (10m)

Minimum Level Above Channel Base 5.0” (125mm) with ramps; 2.0” (60mm) without ramps

Adjustable Mean Velocity Range 0 to 2 fps (0 to 0.6 m/s) to 0 to 10 fps (0 to 3 m/s)

Maximum Recommended Velocity for Installation Under Flow Conditions

1 fps (0.3 m/s) using Insertion Frame

Media ConductivityMinimum media electrical conductivity: 1 µS/cm (water is typically 200 to 600 µS/cm)

Performance Specifications

Accuracy and Traceability1

High Calibrated Accuracy

±2.0% of rate for mean velocities > 2 fps (0.6 m/s) ±0.04 fps (± 0.012 m/s) for mean velocities < 2 fps (0.6 m/s)

Standard Calibrated Accuracy

±4.0% of rate for mean velocities > 2 fps (0.6 m/s) ±0.08 fps (± 0.024 m/s) for mean velocities < 2 fps (0.6 m/s)

Traceability Accuracy is traceable to the National Institute of Science and Technology. A NIST traceable Calibration Certificate is provided with each flow tube.

Accuracy Notes Accuracy is unaffected by electrode coatings such as sewage, grease, calcium carbonate, algae or similar.

Straight Run Requirements

10 Channel widths upstream5 Channel widths downstream(From end of ramps if supplied)

1 For media such as ferric chloride, ferric sulfate (Odophos) or similar highly conductive media, flow meter performance can be adversely affected.

Please consult EMCO for these types of applications.

Power Requirements for 4411e Flow TransmitterPower Supply Options

120V, 60Hz 230V, 50Hz 120V, 50Hz

Analog Output 2 x 4-20 mA 2-wire system

Pulse Output 2-wire potential-free output

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Physical SpecificationsMaterials of Construction

Body material: HDPE with stainless steel fittings Electrode material: AISI 316 stainless steel or Hastelloy C Electrode seals: Viton

Flange Notes Maximum pressure and temperature rating of the flow tube may be limited by the flange type selected. Flow tubes can be specially ordered with plain ends or with butt weld ends. For pressure and temperature ratings of HDPE flow tubes, consult EMCO.

Installation Options NEMA 6/IP68 indefinitely submersible to 30 foot water column

ChannelMag Types, Channel Widths, Calibrated Accuracy

Open Channel Width/Diameter High Accuracy, Empty Channel Installation Standard Accuracy, Empty Channel Installation

Inches mm 1L = 1 Level of Sensors Levels ≤ 60” (1500mm)

2L = 2 Levels of Sensors Levels > 60” (1500mm)

1L = 1 Level of Sensors Levels ≤ 60” (1500mm)

2L = 2 Levels of Sensors Levels > 60” (1500mm)

6” - 20” 150 - 500 CM2/D Not Available 1 x CM2/D CM2/D Not Available

10” - 30” 250 - 750 1 x CM2/8” On Base Center __ High Accuracy

Only __

31” - 50” 755 - 1250 2 x CM2/8” 1 Pair on Base

2 x CM2/8” Version 1L Only

1 Each Side

1 x CM2/8” On Base Center __

51” - 90” 1255 - 2250 3 x CM2/8” All 3 on Base

3 x CM2/8” 1 Each Side, 1 on Base

2 x CM2/8” 1 Pair on Base

2 x CM2/8” Version 1L Only

1 Each Side

91” - 240” 2255 - 6000 4 x CM2/8” All 4 on Base

4 x CM2/8” 2 Each Side, 2 on Base

3 x CM2/8” All 3 on Base

3 x CM2/8” 1 Each Side, 1 on Base

River Flow Standard Accuracy OnlyCalibrated for Point Velocity1

Flowing River Installation1

2 x CM2/8” 4 x CM2/8”

1 Pair on Bed 2 on Each Side, 2 on Bed

1 Optional volumetric river flow calibration to USA Geological Society procedure or similar is available on request. See separate data sheet.

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Dimensions and Weights ChannelMag CM2/D

Dimensions and Weights ChannelMag CM2/8”

ChannelMag CM2/8” Dimensions With Ramps

Nominal CM2 Width Actual CM2 Width W L S R H * M Weight Each *

Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm lb kg

8” 200 10.0” 254 40.0” 1016 11.5” 290 15.0” 380 2.5” 64 6.0” 152 25 12

NOTE: The height “E” of the Insertion Frame normally extends �” (100 mm) nominally above the maximum level. EMCO does not supply insertion frames.* Weight of ramps less 10 lb (5 kg) per CM2 Sensor. Customer responsible to model specific application.

ChannelMag CM2/8” Dimensions Without Ramps

Nominal CM2 Width Depth Width Length

Inches mm Inches mm Inches mm Inches mm

8” 200 2.25” 60 18.0” 460 11.0” 280

* Suggested Protrusion to Avoid Residual Silt Build-up

8.00

”20

5mm

Weight: 12 lb (5.5kg)

8.00” (200mm)Minimum Clearance

Concrete orsimilar

ChannelMag without Ramps in Channel Bed

Recess

Adjust width before installation into channel

Place the CM2 symmetrically into the recess

W Dimension (see table)

2.25

” **

(60m

m)

Advised Width of Channel

Ultrasonic Level Transducer

6.00

”15

0mm

Min

. Cle

aran

ce F

rom

Bo

ttom

of C

hann

el

�.50”90mm

0.50

” (1

0mm

)*

�.00

”10

2mm

PVC Sensor RetainerContoured toChannel Profile

Min

. 2.0

0”50

mm

M

E

H *R

R

S

L

Optional Insertion Frame (not supplied through EMCO)Use ½” (10mm) bolts to fix to sides of channel

Optional ramps

2.00” (50mm)

Ultrasonic LevelSensor

Ø H

ole

To B

e M

ade

In C

hann

el

* Height when an InsertionFrame is used: �.50” (90mm)

CM2/8” Sensor Mounting Holes for Installation in Empty / Partially Empty Channels

** Top of CM2 is 0.25” (6mm) above channel bedShould not be > 1.00” (25mm)

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FMX 167 Hydrostatic Level TransducerA hydrostatic pressure transducer is standard supply for measuring level in partially filled pipes. It is also normally used when the level sensor needs to be hidden from view, or if there is substantial froth on the surface of the media.The hydrostatic level transducer is normally an integral part of the ChannelMag velocity sensor type PM2.

Basic Type FMX167Range 0 - 20” (0 - 500 mm) to 0 - 600 feet (0 - 180 m)Accuracy ± 0.2% full scale or 0.072” (1.83 mm) eg. accuracy at 10” level = 0.072/20 x 100 = 0.36% accuracy at 36” level = 0.072/36 x 100 = 0.2%Barometric Pressure Change Cable contains “breather” tube for compensation Mounted integrally on PM2 ChannelMag sensors Mounted at side of channel for widths < 8” (200 mm)Cable Length See ordering code. Normally same length as PM2 cables. Max. length 1000 feet (300 m)2-wire 4411e Signal 4 - 20mA, 2 wire system, 18 VDC.Electromagnetic Compatibility Interference emission to EN 61326 for CE requirementsProtection NEMA 6 and IP68 indefinately to 700 feet (200 m) w.c Porous Gore-Tex Teflon filter protects internalsAmbient Temperature 14 to 158 degrees F (-10 to 70 degrees C)Materials of Construction Transducer housing: 316L stainless steel Sensor disphragm: aluminum trioxide ceramic Internal seal: standard Viton, optional EPDM Protective cap: high density polyethelene Cable: polyethelene with Gore-Tex Teflon filterExplosive Atmospheres See ordering codeWeight Probe: 0.63 lb (0.3 kg) Cable: Add 0.13 lb/foot (0.05 kg/m)

FMX 167 --

1. Certificate A = Standard B = ATEX II 2 G EEx Ia IIC T6 C = ATEX II 3 G EEx nA IIC T6 D = FM approved IS, Class I, Div. 1, Grps A-D E = CSA approved IS, Class I, Div. 1, Grps A-D F = CSA General purpose2. Mechanical Connection (cable suspension) 1 = None 2 = Mounting clamp, 316L SS 3 = Cable mounting screw G 1½ A 304 SS 4 = Cable mounting screw 1½” NPT, 304 SS 9 = Special version3. Measuring Cell Tube Material A = 316L SS cell enclosure Y = Special version4. Measuring Range Max. Overload FA = 0 to 3 ftH2O MA = 0 to 1 mH2O 73 psi FB = 0 to 6 ftH2O MB = 0 to 2 mH2O 73 psi FC = 0 to 15 ftH2O MC = 0 to 4 mH2O 101 psi FD = 0 to 20 ftH2O MD = 0 to 6 mH2O 145 psi FE = 0 to 30 ftH2O ME = 0 to 10 mH2O 145 psi FF = 0 to 60 ftH2O MF = 0 to 20 mH2O 261 psi FG = 0 to 150 ftH2O MG = 0 to 40 mH2O 352 psi FH = 0 to 300 ftH2O MH = 10 to 100 mH2O 580 psi FK = 0 to 600 ftH2O MK = 0 to 200 mH2O 580 psi VV = Adjusted to customer specifications from 0_______ YY = Special version5. Measuring Cell Seal 1 = Viton 2 = EPDM 9 = Special version6. Extension Cable A = Length in ________ meters, PE cable B = 10m PE cable, can be shortened C = 20m PE cable, can be shortened E = 30 ft cable, PE, can be shortened F = 60 ft cable, PE, can be shortened G = Length in ________ feet, PE cable Y = Special version7. Additional Equipment 1 = Probe with integrated Pt 100, 4-wire 3 = Terminal housing with GORE-TEX® filter, NEMA 4X

1 2 3 4 5 6 7

Support cable

Pressurecompensation

tube

Protective cap

Cable mounting screw via

order code or as an accessory

Order No. 1½ NPT, 52009311

Order No. G 1½ 52008264

Terminal housing via order

code or as an accessory

Order No. 52006152

Beading radius

> 4.7” (120mm)

Mounting clamp via order

code or as an accessory

Order No. 52006151

Extension cable length

3 ft to 985 ft (1 to 300 m)

Guide pipe

d j > 0.91” (> 23 mm)

Waterpilot FMX 167

Additional weight (accessory)

Order No. 52006153

Protective cap (included)

The FMX is normally installed inside the ramps of a PM2 sensor. Alternatively, it may be mounted in a stilling well, most conveniently a PVC tube of internal diameter > 0.9” (25 mm). The cable contains a breather tube and is normally ter-minated in the 4411e transmitter. This cable must not be kinked or blocked. An intermediate terminal housing is available, as well as a cable mounting screw or mounting clamp, as shown. Terminal housing supplied for level transducer cable greater than 50 feet (15 m). Breather tube ends in terminal housing. Extended cable from terminal housing not normally included. Extended cable may be same 2-core cable as PM2 cable.

Junction Box used for cables > 33 feet (10 m)

Ø0.31”(8)

Ø9.45”(240)

Ø8.86”(225)

Ø0.87” ± 0.004”(22 ± 0.1)

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FMU 40 --

1. Certificate A = Non-hazardous version S = FM IS Cl. I, II, III; Div. 1, Grps A - G FM NI Cl. I, Div. 2 T = FM XP Cl. I, II, III; Div. 1, Grps A - G U = CSA IS Cl. I, II, III; Div. 1, Grps A - G CSA NI Cl. I, Div. 2 V = CSA XP Cl. I, II, III; Div. 1, Grps A - G N = CSA General Purpose

2. Process Connection R = G 1½, ISO 228 N = 1½” NPT

3. Power Supply / Communication B = 2-wire, 4 to 20 mA loop-powered / HART H = 4-wire, 10.5 to 32 VDC / 4 to 20 mA HART G = 4-wire, 90 to 253 VAC / 4 to 20 mA HART D = 2-wire PROFIBUS-PA F = 2-wire Foundation Fieldbus

4. Display / Operation 1 = Without LCD 2 = With LCD VU 331 / on-site operation

5. Housing A = F12 aluminum housing, coated, NEMA 6P C = T12 aluminum housing with separate terminal compartment, coated, NEMA 6P

6. Cable Entry 2 = M 20 x 1.5 3 = G ½ 4 = ½” NPT 5 = M 12 PROFIBUS-PA plug-in connector 6 = 7/8” Foundation Fieldbus plug-in connector

1 2 3 4 5 6

FMU 41 --

1. Certificate A = Non-hazardous version S = FM IS Cl. I, II, III; Div. 1, Grps A - G FM NI Cl. I, Div. 2 T = FM XP Cl. I, II, III; Div. 1, Grps A - G U = CSA IS Cl. I, II, III; Div. 1, Grps A - G CSA NI Cl. I, Div. 2 V = CSA XP Cl. I, II, III; Div. 1, Grps A - G N = CSA General Purpose

2. Process Connection R = G 2, ISO 228 N = 2” NPT

3. Power Supply / Communication B = 2-wire, 4 to 20 mA loop-powered / HART H = 4-wire, 10.5 to 32 VDC / 4 to 20 mA HART G = 4-wire, 90 to 253 VAC / 4 to 20 mA HART D = 2-wire PROFIBUS-PA F = 2-wire Foundation Fieldbus

4. Display / Operation 1 = Without LCD 2 = With LCD VU 331 / on-site operation

5. Housing A = F12 aluminum housing, coated, NEMA 6P C = T12 aluminum housing with separate terminal compartment, coated, NEMA 6P

6. Cable Entry 2 = M 20 x 1.5 3 = G ½ 4 = ½” NPT 5 = M 12 PROFIBUS-PA plug-in connector 6 = 7/8” Foundation Fieldbus plug-in connector

1 2 3 4 5 6

Basic Type FMU 40Range 0 - 200” (0 - 5000 mm)Basic Type FMU 41Range 0 - 315” (0 - 8000 mm)Accuracy ± 0.2% full scaleMinimum Dead Band 10” (250 mm)Air Density Changes Automatic temperature compensationConnection 1½” NPT male for FMU 40 2” NPT male for FMU 412-Wire 4411e Signal 4 - 20mA, 2 wire system, 18VDCHART Communication IncludedProtection NEMA 6 and IP68 for 24 hours @ 6 feet w.cElectromagnetic Compatibility Interference emission to EN 61326Indication 4 digit LCDAmbient Temperature -5 to +40 degrees F (-20 to +60 degrees C)Note: Outside these temperatures the LCD function is restricted. A protective cover is recommended if operating in strong sunlight.Cable Entry ½” NPTMaterials of Construction PVDF sensor with EPDM seal Aluminum enclosure, chromed and powder coated, sea water resistant.Housing F12 housing is standardExplosive Atmospheres FM and CSA Class 1 Div. 1 or 2 optionalWeight FMU 40 approx. 5.5 lb (2.5 kg) FMU 41 approx. 6 lb (2.6 kg)

F12 Housing

FMU 40 & FMU 41 Ultrasonic Level Transducer As an alternative to the hydrostatic level transducer, an ultrasonic level transducer may be incorporated in a convenient man hole. This must be at least 1 diam-eter upstream or downstream of the end of the ramps of the PM2 ChannelMag sensor ramps. This avoids critical flow rise or fall errors.

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Wiring Diagrams Junction Box Wiring (1 Sensor)

Wiring Diagrams Junction Box Wiring (1 Sensor With Pre -amp)

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Wiring Diagrams Junction Box Wiring (2 Sensors)

Wiring Diagrams Junction Box Wiring (2 Sensors With Pre -amp)

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Wiring Diagrams Junction Box Wiring (4 Sensors)

Wiring Diagrams Junction Box Wiring (4 Sensors With Pre -amp)

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Model and Suffix CodesCategory Suffix Codes

Model

ChannelMag CM2/8” Basic Type and Quantity 2 x CM2/8”

ChannelMag CM2/D ChannelMag for Half Circle 1 x CM2/D

Channel Width

6” - 200’ (150mm - 60m) at ChannelTop T

006”T -200’T

Half Circle _ _ _ -D

Special1 S

Channel Bottom Width

6” - 200’ (150mm - 60m) at Channel Bottom B

006”B -200’B

Half Circle 000

Special1 S

Media Level

001” - 999” (25mm - 25000mm) at Media Level L

001”L -999”L

Special1 S

Accuracy

Standard Accuracy R

High Accuracy H

Special1 S

Ramps2

Ramps Included R

Ramps Not Included N

Special1 S

Cables

Standard Cable Length3 C

ATEX Zone 2 With Standard Cable A

NEC Class 1, Div. 2 With Standard Cable E

Pre-Amp for Cables > 150 feet (50m) P

Special, Including Special Cable Length4 S

Coil Supply

120V Coil Supply A

230V Coil Supply B

Special1 S

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Category Suffix Codes

Levels of Sensors

1 Level of CM2 Sensors 1L

2 Levels of CM2 Sensors With Remote Single Relay Junction Box 2L

2 x CM2/8” 090”T 072”B 048”L R R C W 1L

Note: EMCO does not supply insertion frames. Customer responsible to model specific application.

All special orders must include a complete

description along with the ordering

code. Always use the “Special” option for

combinations.

ChannelMag CM2/8” sensors are always

supplied with ramps when the CM2 sensor

lies on the bed of the channel.

C = 50 feet (15m) UL approved buryable

and submersible cable from CM2 sensor(s)

to the junction box. Multiple sensor cable

lengths are of the same length. Cables

terminate in the junction box, potted on-

site with re-enterable potting gel. Junction

box and gel supplied. Further cables from

the junction box to the transmitter are as

standard 50 feet (15m).

Use for special details, including

combinations. All special orders must

include a complete description along

with the ordering code. Always specify

separately:

• Cable length from CM2 sensor(s) to

junction box

• From junction box to 4411e

transmitter

For cable lengths > 150 feet (50m) from the

junction box, a pre-amp is required.

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© Spirax Sarco, Inc. 2006 All rights reserved. Printed in U.S.A.SL-CHMAGCM2-350-01 1M 03/07

EMCO Flow Systems is a division of Spirax Sarco, Inc. • 1150 Northpoint Blvd. • Blythewood, SC 29016

For information on EMCO flow products, contact:EMCO Flow Systems • 2150 Miller Drive • Longmont, Colorado 80501 T: 800.�56.9�62 or �0�.682.�060 • F: �0�.682.�069 • sales@emcoflow.com • www.emcoflow.com

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